Automatic releasing mechanism for locks



30 mere fully described.

Patented May 3, 1927.

UNITED STATES AILF'RED J; iEAdY, or CH 'IC AGO, mitators, ASSIGNOR}; BY MESNE essreivmnfi'rs, o"

rarest orr cn,

ism: r c-mix CORPORATION, or chrome, ILLmoI's, A oonronA'rron' or rnnmois.

hermetic RELEAsiNG MEoHAnIsM roe Locks.

' Animatio men march 29, 1922'. Serial my. 547,616.=

This invention relates to means for automatioally operating a supplemental door look when an attempt is made-to unlawfully force or tamper with the regular fastening means.

A jfurthe'r'object of this invention is to provide such a releasing! mechanism which is adapted to be fitted over existing door locks insuch a Way that attempted removal of said lock will cause the operation of this device to bring a supplemental lo'clrinto operst'ion. A

' v A flirth'er object is to'so arrange tlie inechan-isni thtt't other miner-able parts of the door can be protected thereby so that an attack 'oh such vulnerable parts will CWIISQ the-mechsnism to operate. r a

A iurther' object of the invention is to 1 sound a Warning r'neans when the mechanism is released to frighten away persons attempting unlawtnl' entry before they can solve the operation of the auxiliary lock used reconnection with this device Other and further important objects ofthis invention will be a parent from the disclosures in the specification and the accompartying drawin s;

The-invention (in a preferred form) is ilrustratedin the drawings and hereinafter Onthe drawings: 7

Figure 1' shovvs a rear elevation oi a vault door with the device of this stalil'ed thereon;

Figure 2' is an enlarged fragmentary ele-' vation of the device shown in Figure 1 Figure 3' is a slightly enlarged side elevatioh of the device shown in Fi ure 2.

Figure 4 is a slightly enlarged section on- 4 th 'l-i he 4 of Figure 2' showing thede: vice piece on a ve ultloek. 1 Fig r9 5 is a slightly enlarged section on the; line 5-"5 of Figure 2; Figure- 6 isan enlolrged'seetion on? the line 6*--6j of Figure 5. a Fi ure 7 shows a fragmentary rear elevation of a vaailt door with a modified form of the device o fth i s inventioi-i ihstelled thereon. Figure 8 is an enlarged fragmentary elevation of the device shown Figure .7.

Fi ure 9 is a side elevation of device in partial sectitm the line 9 -59 of line 1111 of Figure 10.

I tri ger 7.

invention in- 5 Figure 10 is an enlarged section onthe line 10-1'0 of Figure 8. Figure 11 is an enlarged section on As shown on the drawings:

the I I A description of the device as installed on an ordinary vault door fo11ows it being understoodtha't theinvention is not limited to such a: class of closures, but may be con-' 'structe'd in, a large variety of ways suitable to other kinds of doors; I and with other forms of auxiliary locksbesides theione illustrated here and described in my cop'ending application for an automatic safety lock for vault and safe doors, which has issued as Patent No. 1,551,580.

In" the diagrammatic view-or the rear of a vault door shown in Figure 1, the num'eral. 1 refers to the steel plate used as the front and princi al part of such a door, with slidi'li'g looking bolts 2 arranged on the back thereof and tied together by a plurality of bars 3* against one of which the usual combination or time lock 4 opeiatesto hold the bolts 2 extendedwhen in looking position. An auxiliairy'l'ock 5 is al'so'shovvn on Figure 1.- The 'a rticdlar loch illustrated projects athrea'de shaft against one" of -the bars 3 when the A device embodying the present invention is-shovvfi indetail in Fi ures 2 to 6 inclusive. The ha-ch piate 8 is soy formed with slots as tofit over the usn'a'l form of combination lock 4, to he held thereto' by' the screws 9 weight 6 is released by the which are usedto hold the cover or said lock 4 in 'place, The back" plate syn-as a plurality of bosses IO; 11 and 12 formed frorhthe material of the plate, those marked 10* bein Iised to hinge'dly support a front plate' I3 at one nd; the other eiidof said front plate13 being nbrin'ail-y lield a vvay from the backplate-8' by an aidjiistable screw it aibuttinga gainst some part ofthe' door itself outside of the combination loch; A Screw 15' and 5 spring 1 6' fastened to the back p'iztte engaging'the front plate serve; to force thelatter against the former; the' holdi ngaction of the screw 14:;

agaihst The bosses 11 and- 12'' are for lioldinga V tuhe'li through which asoftm'etal wire 18 is threaded. One end of this wire is" fastened to the" outboard end of thci'tube', the

this case by a cons V The underside of the front plate is provided other end being fastened to one end of a bell crank 19 mounted on a stud 20 on the back plate; The bell, crank 1s connected to the auxiliary lock in any convenient manner, in to the trigger 7.

with a knife blade 22 whichacts in connection with the boss 12 as a shear to cut the wire 18 thereby releasing the weight 6 by means of the bell crank, cord andtrigger,

7 It will be obvious that as long as the screw 14 remains in place as adjusted upon installation, the shearing members are inoperative, so that the wire 18 holds the auxiliary lock open. 2 a

An insulated block 23 has electrical.contact points 24: adapted to be closed by one arm of the bell crank if the wire should be out. These contacts are wired through a battery 25 and a buzzer or other sound producing means 26 mounted in any convenient place, preferably onthe inside of the door.

i The operation is as follows:

Under ordinary'operating conditions this device remains unaffected and inoperative. Should an attempt be made to force the combination lock or remove same, the contact of the screw 14: with the surface of] the door willbe altered, allowing the spring 16 to force the. front plate in, cutting the wire 18 in the shearing arrangement 12, 22, thereby causing the operation of an auxiliary lock.

At the same time the movementof the bell crank also makes a closed circuit for the buzzer or similar device 26, which is intended to disturb a burglar and discourage a icontinuation of his attempt at entry.

It is to be noted that the inertia of the member 13 would be suflicient when subjected toa shock to cut the wire even in case of failure of the spring 16 to sever the wire.

7 The long tube 17 and wire 18 are intended to be arranged around other vulnerable parts of the door locking mechan sm in such a way madeby arranging to have the wire 18 ex- I tend directly toan: ordinary spring bolt so that cutting the wire allows said spring bolt to slideinto a recess in the door frame.

A modification of this device is-shown in Figures 7 to 11 inclusive. Parts identical in 7 form and function in both embodiments of theinvention bear thelsame numerals. The operation of the wire, bell crank, etc., is the same in both forms, the difference being in the method of attachment and the means for cutting the wire. l.

The, plate 27 1s mounted over the usual permutation or time lock by the screws 28,

29, 30. Thescrew SOIis fastened to a moving block 31 which iscarrled by arecessed block 32 which "is fastenedto the'door by a screw 33. The block 31 has a large hole for the tubing and" a small holefor the wire which .registerswith a'similar hole in the block 32 when the block 31 is seated in the recess. Thearrangement of the screws 28 to 30'is such that the block 31 will normally beheld seatedintherecess; 'VVith the wire 18 threaded through these holes to hold the lock open, it will require avery-heavy jar or an attempt to force theqlockto cause therplate 27, screw 30 and block 31 to move outward thereby cutting the wire and releasing the auxiliary lock operating mechanism. In both forms of my device cutting or burning the tube andwireat anygplace will release the wire and allow it to be pulled through the remaining part of the tube thereby operating the emergency lock. In'this case the bell crank 19 is-mounted .on an arm 34: clamped by the block32, as

shown in Figure 11. It is of course ossible to adapt the signaling device to t e bell crank inthis modified form.

V I am .awarethat numerous detailsiof construction may be varied through j a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patentgranted otherwise thannecessitated by the prior art. V

o I claim as my invention:

1. The combination with vault doors, in-

emergency lock, "and operating mechanism therefor, consisting of a supporting plate adapted to fasten over the regular lock,

means adapted vto hold said emergency lock in an inoperative position, and means connected with said supporting plate for cutting saidfirst mentioned means andthercby locking said auxiliary lock'when said regular lock is forcibly tamperedwith;

2. In a device of the class described, a door, a lock for the door, an emergency lock, means for operatingsaid emergency lock when theregularlock is abused, consisting of means adapted to hold said emergency lock inoperative, said means being fastened at one end in a tube which can beled to any vulnerable point in the lock operating mechanism of the door, and means-for cut .ting'said wire whereby the emergencylock will be operated to prevent unlawful entry. 3. The combination with an, auxiliary locking means, of means for controlling said eluding the locks therefor, of an additional lock, consisting of a semi-flexible tube, a1

wire threaded through said tube and fastened to one end of the tube, a bracket for holding the other end of said tube, means on said bracket for cutting said'wire when the bracket is jarred or moved, andconnecting means'between said wire and the auxiliary tube, lock restraining means in said tube and means for severing the restraining means to permit operation of said locking mechanism.

5. The combination of a closure, of' a safety locking device therefor, and a tensioned wire Within a tube normally restraining said locking device, said wire and tube being adapted to be disposed over the vulnerable parts of the closure in positions adapted to sever the tube and Wire upon an attempt at forceful entry, I

6. The combination with a closure and locking means therefor, of a supplemental locking means, and operating means therefor, comprising a Bowden wire extending to the vulnerable parts of the first mentioned locking means for said closure, and means whereby a forceful attempt to unlawfully release said vulnerable parts will result in severing said Bowden wire, thereby operating said supplemental locking means. v

7, In combination with a look, a lock restraining mechanism adapted to normally hold the lock inoperative, comprising a severable tension member attached at one end to the lock mechanism, and a non-compressible member attached to the free end of the tension member adaptedto serve as a strut to normally maintain the tension in said member.

In testimony whereof I have hereunto subscribed my'name. ALFRED J. MAGY. 

